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// Copyright (c) 2019-2022, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define IN_UNIT_TESTS
#include <stdio.h>
#include <math.h>
#include "cryptonote_core/blockchain.h"
#include "cryptonote_core/tx_pool.h"
#include "cryptonote_core/cryptonote_core.h"
#include "blockchain_db/testdb.h"
#define LONG_TERM_BLOCK_WEIGHT_WINDOW 5000
enum test_t
{
test_max = 0,
test_lcg = 1,
test_min = 2,
};
namespace
{
class TestDB: public cryptonote::BaseTestDB
{
private:
struct block_t
{
size_t weight;
uint64_t long_term_weight;
};
public:
TestDB() { m_open = true; }
virtual void add_block( const cryptonote::block& blk
, size_t block_weight
, uint64_t long_term_block_weight
, const cryptonote::difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, uint64_t num_rct_outs
, const crypto::hash& blk_hash
) override {
blocks.push_back({block_weight, long_term_block_weight});
}
virtual uint64_t height() const override { return blocks.size(); }
virtual size_t get_block_weight(const uint64_t &h) const override { return blocks[h].weight; }
virtual uint64_t get_block_long_term_weight(const uint64_t &h) const override { return blocks[h].long_term_weight; }
virtual std::vector<uint64_t> get_block_weights(uint64_t start_height, size_t count) const override {
std::vector<uint64_t> ret;
ret.reserve(count);
while (count-- && start_height < blocks.size()) ret.push_back(blocks[start_height++].weight);
return ret;
}
virtual std::vector<uint64_t> get_long_term_block_weights(uint64_t start_height, size_t count) const override {
std::vector<uint64_t> ret;
ret.reserve(count);
while (count-- && start_height < blocks.size()) ret.push_back(blocks[start_height++].long_term_weight);
return ret;
}
virtual crypto::hash get_block_hash_from_height(const uint64_t &height) const override {
crypto::hash hash = crypto::null_hash;
*(uint64_t*)&hash = height;
return hash;
}
virtual crypto::hash top_block_hash(uint64_t *block_height = NULL) const override {
uint64_t h = height();
crypto::hash top = crypto::null_hash;
if (h)
*(uint64_t*)&top = h - 1;
if (block_height)
*block_height = h - 1;
return top;
}
virtual void pop_block(cryptonote::block &blk, std::vector<cryptonote::transaction> &txs) override { blocks.pop_back(); }
virtual void set_hard_fork_version(uint64_t height, uint8_t version) override { if (height >= hf.size()) hf.resize(height + 1); hf[height] = version; }
virtual uint8_t get_hard_fork_version(uint64_t height) const override { if (height >= hf.size()) return 255; return hf[height]; }
private:
std::vector<block_t> blocks;
std::vector<uint8_t> hf;
};
}
#define PREFIX_WINDOW(hf_version,window) \
std::unique_ptr<cryptonote::Blockchain> bc; \
cryptonote::tx_memory_pool txpool(*bc); \
bc.reset(new cryptonote::Blockchain(txpool)); \
struct get_test_options { \
const std::pair<uint8_t, uint64_t> hard_forks[3]; \
const cryptonote::test_options test_options = { \
hard_forks, \
window, \
}; \
get_test_options(): hard_forks{std::make_pair(1, (uint64_t)0), std::make_pair((uint8_t)hf_version, (uint64_t)LONG_TERM_BLOCK_WEIGHT_WINDOW), std::make_pair((uint8_t)0, (uint64_t)0)} {} \
} opts; \
cryptonote::Blockchain *blockchain = bc.get(); \
bool r = blockchain->init(new TestDB(), cryptonote::FAKECHAIN, true, &opts.test_options, 0, NULL); \
if (!r) \
{ \
fprintf(stderr, "Failed to init blockchain\n"); \
exit(1); \
}
#define PREFIX(hf_version) PREFIX_WINDOW(hf_version, LONG_TERM_BLOCK_WEIGHT_WINDOW)
static uint32_t lcg_seed = 0;
static uint32_t lcg()
{
lcg_seed = (lcg_seed * 0x100000001b3 + 0xcbf29ce484222325) & 0xffffffff;
return lcg_seed;
}
static void test(test_t t, uint64_t blocks)
{
PREFIX(10);
for (uint64_t h = 0; h < LONG_TERM_BLOCK_WEIGHT_WINDOW; ++h)
{
cryptonote::block b;
b.major_version = 1;
b.minor_version = 1;
bc->get_db().add_block(std::make_pair(b, ""), 300000, 300000, bc->get_db().height(), bc->get_db().height(), {});
if (!bc->update_next_cumulative_weight_limit())
{
fprintf(stderr, "Failed to update cumulative weight limit 1\n");
exit(1);
}
}
for (uint64_t h = 0; h < blocks; ++h)
{
uint64_t w;
uint64_t effective_block_weight_median = bc->get_current_cumulative_block_weight_median();
switch (t)
{
case test_lcg:
{
uint32_t r = lcg();
int64_t wi = 90 + r % 500000 + 250000 + sin(h / 200.) * 350000;
w = wi < 90 ? 90 : wi;
break;
}
case test_max:
w = bc->get_current_cumulative_block_weight_limit();
break;
case test_min:
w = 90;
break;
default:
exit(1);
}
uint64_t ltw = bc->get_next_long_term_block_weight(w);
cryptonote::block b;
b.major_version = 10;
b.minor_version = 10;
bc->get_db().add_block(std::make_pair(std::move(b), ""), w, ltw, bc->get_db().height(), bc->get_db().height(), {});
if (!bc->update_next_cumulative_weight_limit())
{
fprintf(stderr, "Failed to update cumulative weight limit\n");
exit(1);
}
std::cout << "H " << h << ", BW " << w << ", EMBW " << effective_block_weight_median << ", LTBW " << ltw << std::endl;
}
}
int main()
{
TRY_ENTRY();
test(test_max, 2 * LONG_TERM_BLOCK_WEIGHT_WINDOW);
test(test_lcg, 9 * LONG_TERM_BLOCK_WEIGHT_WINDOW);
test(test_min, 1 * LONG_TERM_BLOCK_WEIGHT_WINDOW);
return 0;
CATCH_ENTRY_L0("main", 1);
}
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